• 제목/요약/키워드: Stepwise Multiple Regression model

검색결과 243건 처리시간 0.033초

간호대학생의 긍정적 사고, 주관적 행복감이 학교 적응에 미치는 영향 (Influence of Positive Thinking and Subjective Happiness on School Adaptation in Nursing Students)

  • 김수올
    • 한국보건간호학회지
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    • 제30권3호
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    • pp.395-404
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    • 2016
  • Purpose: The purpose of this study was to investigate the effects of positive thinking and subjective happiness on school adaptation in nursing students. Methods: Data were collected by questionnaires from 282 nursing students in the month of November 2013. The collected data were analyzed using descriptive statistics, independent t-test, ANOVA, Pearson's correlation coefficient, and stepwise multiple regression. Results: A positive correlation was found for school adaptation with positive thinking and subjective happiness. Positive thinking, subjective happiness, and major satisfaction were all significant predictors of school adaptation. The model explained 30.2% of the valuables. Conclusion: The results of this study suggest that positive thinking should be considered when developing strategies to increase school adaptation in nursing students.

젊은 정상성인의 비운동 VO2max 추정식 (Non-Exercise VO2max Estimation for Healthy Young Adults)

  • 이정아;조상현;이충휘;권오윤
    • 한국전문물리치료학회지
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    • 제12권3호
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    • pp.74-83
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    • 2005
  • The purpose of this study was to produce the regression equation from non-exercise $VO_{2max}$ of healthy young adults and to develop a maximal oxygen consumption ($VO_{2max}$) regression model. This model was based on heart rate non-exercise predictor variables (rest heart rate, maximal heart rate/rest heart rate), as an extra addition to the general regression which can reflect an individual's inherent or acquired cardiorespiratory fitness. The subjects were 101 healthy young adults aged 19 to 35 years. Exercise testing was measured by using a Balke protocol for treadmill and indirect calorimetry. The prediction equation was analyzed by using stepwise multiple regression procedures. The mean of $VO_{2max}$ was $39.02{\pm}6.72\;m{\ell}/kg/min$ (mean${\pm}$SD). The greatest variable correlated to $VO_{2max}$ was %fat. The predictor variable used in the non-exercise $VO_{2max}$ included %fat, gender, habitual physical activity and $HR_{max}/HR_{rest}$. The non-exercise $VO_{2max}$ estimation was as follows: $VO_{2max}$($m{\ell}/kg/min$)=55.58-.41(%fat)+.59(physical activity rating)-2.69($HR_{max}/HR_{rest}$)-5.36 (male=0, female=1); (R=.85, SEE=3.64, R2=.72: including heart rate variable); $VO_{2max}$($m{\ell}/kg/min$)=48.47-.41(%fat)+.45(physical activity rating)-5.12 (male=0, female=1); (R=.84, SEE=3.74, R2=.70: with the exception of heart rate variable). As an added heart rate variable, there was only a 2% coefficient of determination improved. Therefore, these results demonstrated that heart rate variable correlation with a non-exercise regression model was very low. In conclusion, for healthy young korean adults, those variables that can affect non-exercise $VO_{2max}$ estimation turned out to be only % fat, gender, and physical activity. We suggest that further research of predictor variables for non-exercise $VO_{2max}$ is necessary for different patient groups who cannot perform maximal exercise or submaximal exercise.

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건강증진행위의 영향요인 분석 -위암환자중심 - (Predicting Health-Promoting Behaviors in Patients with Stomach Cancer)

  • 오복자
    • 대한간호학회지
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    • 제25권4호
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    • pp.681-695
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    • 1995
  • It has been noted that a genetic alteration of cells influenced by unhealthy lifestyle In addition to a series of other carcinogens increases various neoplasmic diseases. Therefore the importance of lifestyle that minimizes such impact on health should be emphasized. Since stomach cancer, the most common neoplasmic disease in Korea, is re-lated to the Korean lifestyle and as there's a possibility of its recurrence, people with stomach cancer need to lead a healthy lifestyle. The purpose of this study is to provide a basis for nursing intervention strategies to promote health promoting behaviors that are constructive to a healthy lifestyle. A multivariate model was constructed based on the fender's health promotion model and Booker's health belief model by including influential factors such as hope. The sample was composed of 164 patients with stomach cancer who visited outpatient clinics of a university hospital in Seoul. The following instruments were used in the study after some adaptation : Wallston and others' multidimensional health locus of control scale Laffrey's health conception scale, Lawston and others' health self- rating scale, Walker and others' health promotion lifestyle profile and Rogenberg's self esteem scale. In addition Moon's health belief scale was used with some modification. For self efficacy, the present author constructed a self-efficacy scale based on previous research. The above mentioned instruments were tested in a pilot study with 24 patients with stomach cancer. The reliabilities of instruments were tested with Cronbach's alpha(0.574∼0.949). Data were analyzed using a SAS program (or Pearson correlation coefficients, descriptive correlational statistics and stepwise multiple regression. The results are as follows : 1. The scores on the health promoting behavior scale ranged from 55 to 145 with a mean of 107.91 (S. D : 16.50). The mean scores(range 1-4) on the different dimensions were nutrition 3.14, exercise 2.48, stress management 2.69, health responsibility 2.65, interpersonal relationship 2.878E self actualization 2.85. 2. There were significant correlations among all the predictive variables & the health promoting behavior (r=.20-.55, p〈.01) 3. Stepwise multiple regression analysis showed that : 1) Hope was the main predictor and accounted for 29.8% of the total variance. 2) Self efficacy, perceived barriers & self esteem accounted for an additional 14.6% of the total variance. 3) Hope, self efficacy, perceived barriers & self esteem altogether accounted for 44.3% of the total variance. In conclusion, hope, self efficacy, perceived barriers & self esteem were identified as important variables that contributed to promote health promoting behavior.

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여대생의 건강증진행위에 영향을 미치는 요인 (Factors Influencing Health Promoting Behavior of Women College Students)

  • 김주현;김성재;박연환
    • 성인간호학회지
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    • 제13권3호
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    • pp.431-440
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    • 2001
  • The purpose of this study was to identify the factors influencing health promoting behavior of college students to develop health promoting interventions of young adults. The subjects of this study were 176 women college students, living in a small city in Korea. The data were collected by interviews and a self-report questionnaire, during the period from September, 1999 to December, 1999. The instruments for this study were the PRQ-II by Weinert(1988), the scale of Locus of Control by Wallstone et al.(1978), the scale of self efficacy by Sherer & Maddux(1982), 10 points visual analogue scale for perceived health status and the importance of health, the health promoting behavior scale by Walker et al.(1987), and the scales developed by the authors for the perceived benefits of health promoting behavior, and perceived barriers to health promoting behavior. Cronbach 's alpha of these scales were .68 ~.89. The data were analyzed using descriptive statistics, Pearson's correlation coefficients, and stepwise multiple regression. The results of this study were as follows: 1. Among cognitive perceptual factors of the Health Promotion Model by Pender(1987), the scores of the importance of health, the perceived internal control of health, self efficacy, the perceived health status, and the perceived benefits had a significantly positive correlation with the scores of the health promoting behavior of college students. In addition, the scores of the perceived barriers had a significantly negative correlation with the scores of the health promoting behavior of college students. 2. Among modifying factors of the Health Promotion Model by Pender(1987), the extent of religious activities of college students and the scores of social support had a significantly positive correlation with the scores of health promoting behavior of college students. 3. Stepwise multiple regression analysis revealed that the most powerful predictor of health promoting behavior was self-efficacy. A combination of self-efficacy, the perceived benefits, the perceived barriers, the perceived health status, and the importance of health accounted for 45.1% of the variance in health promoting behavior in college students From the results of this study, we concluded that the Health Promotion Model by Pender can be used to explain health promoting behavior of college students. In addition, we suggested that the results of this study be considered in developing health promoting programs of young adults.

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일 지역 농촌 노인들의 건강증진행위에 영향을 미치는 요인 (Factors Influencing Health Promoting Behavior of the Elderly)

  • 김희자;김주현;박연환
    • 성인간호학회지
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    • 제12권4호
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    • pp.573-583
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    • 2000
  • The purpose of this study was to identify the factors influencing health promoting behavior of the elderly for develop health promoting intervention of old people. The subjects of this study were 167 elderly person over the age of 60, living in rural city in Korea. The data were collected by interview and self report questionnaire, during the period from May, 1999 to August. 1999 The instruments for this study were the PRQ-II by Weinert(1988), the scale of Locus of Control by Wallstone et al(1978), the scale of self efficacy by Sherer & Maddux(1982), 10 points visual analogue scale for the perceived health status and the importance of health, the health promoting behavior scale by Walker et al(1987), and the scales developed by authors for the perceived benefits of health promoting behaviors, and the perceived barriers to health promoting behaviors. The Cronbach 's alpha of these scales were .84 ~.97. The data were analyzed using descriptive statistics, Pearson's correlation coefficients, and stepwise multiple regression. The results of this study were as follows: 1. Among cognitive perceptual factors of the Health Promotion Model by Pender(1987), the scores of the importance of health, the perceived internal control of health, the self efficacy, the perceived health status, and the perceived benefits were significantly positive correlation with the scores of the health promoting behavior of the elderly. In addition, the scores of the perceived barriers were significantly negative correlation with the scores of the health promoting behavior of the elderly. 2. Among modifying factors of the Health Promotion Model by Pender(1987), the pocket money of the elderly, the scores of social support were significantly positive correlation with the scores of the health promoting behavior of the elderly. In addition, ages of old people were significantly negative correlations with the scores of the health promoting behavior of the elderly. 3. Stepwise multiple regression analysis revealed that the most powerful predictor of health promoting behavior was the self efficacy. A combination of the self efficacy, the perceived barriers, the social support, the importance of health, and the perceived internal control of health accounted for 56.2% of the variance in health promoting behavior in the elderly. From the results of this study, we concluded that the Health Promotion Model by Pender will be used to explain health promoting behavior of the elderly. We suggested that the results of this study will be considered in developing health promoting programs of elderly.

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사과 경도의 비파괴측정을 위한 검량식 개발 및 정확도 향상을 위한 연구 (Development of Calibration Model for Firmness Evaluation of Apple Fruit using Near-infrared Reflectance Spectroscopy)

  • 손미령;조래광
    • 한국식품저장유통학회지
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    • 제6권1호
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    • pp.29-36
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    • 1999
  • Using Fuji apple fruits cultivated in Kyungpook prefecture, the calibration model for firmness evaluation of fruits by near infrared(NIR) reflectance spectroscopy was developed, and the various influence factors such as instrument variety, measuring method, sample group, apple peel and selection of firmness point were investigated. Spectra of sample were recorded in wavelength range of 1100∼2500nm using NIR spectrometer (InfraAlyzer 500), and data were analyzed by stepwise multiple linear regression of IDAS program. The accuracy of calibration model was the highest when using sample group with wide range, and the firmness mean values obtained in graph by texture analyser(TA) were used as standard data. Chemometrics models were developed using a calibration set of 324 samples and an independent validation set of 216 samples to evaluate the predictive ability of the models. The correlation coefficients and standard error of prediction were 0.84 and 0.094kg, respectively. Using developed calibration model, it was possible to monitor the firmness change of fruits during storage frequently. Time, which was reached to firmness high value in graph by TA, is possible to use as new parameter for freshness of fruit surface during storage.

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앤더슨-뉴만 모형을 이용한 여성의 예방목적 치과의료이용행태에 관한 연구 (FACTORS AFFECTING WOMEN'S PREVENTIVE DENTAL UTILIZATION : AN APPLICATION OF THE ANDERSEN-NEWMAN MODEL)

  • 김수남;이흥수;김대업
    • 대한소아치과학회지
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    • 제24권1호
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    • pp.195-203
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    • 1997
  • The purpose of this study is to provide framework for understanding women's preventive dental utilization. In this paper Andersen-Newman's model is applied to the use of dental visits. This model consists of predisposing, enabling, and need components that describe a person's decision to use preventive health services. The sample consisted of 1907 women living Iksan city. Models are operationalized using stepwise multiple regression analysis and path analysis. The number of independent variables used in the analysis was 27 in total, i.e. 20 predisposing components, 6 enabling components, and 1 need component. Preventive dental utilization was measured based on the number of visits. The data collected by means of a questionnaire survey. In this study, the amount of variance by the model was 11 percent. Number of restricted activity days caused by oral disease, perceived threat of dental disease, having a regular dental care, and income were found to have significant major effects on preventive dental utilization of women. Number of restricted activity days caused by oral disease was the most important variable affecting preventive dental utilization of women.

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다문화가족 방문교육지도사의 자존감 및 낙관성이 셀프리더십에 미치는 영향 (The Influence of Self-esteem and Optimism on the Self-leadership of Multicultural Family Home-visit Instructors)

  • 권기남;황혜신;채진영;김헤라;강복정;서주현
    • 가정과삶의질연구
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    • 제35권2호
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    • pp.63-75
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    • 2017
  • The purpose of this study was to investigate the differences in optimism, self-esteem and self-leadership according to age, monthly income, and teaching experiences of multicultural family home-visit instructors and the influence of optimism and self-esteem on self-leadership. 668 home-visit instructors participated in the online survey from 140 multicultural family support centers in Seoul, 6 metropolitan cities, 9 provinces, and other cities and counties. Data were analyzed through frequence, percentages, Pearson's correlations, One-way ANOVA, $Scheff{\acute{e}}$ post-hoc test, and stepwise multi-regression using SPSS 21.0. The main findings are as follows. First, there were significant differences in optimism and self-esteem according to age and monthly income. Second, there were significant differences in self-leadership according to age and home-visit teaching experiences. Third, the stepwise multiple regression model showed that optimism, self-esteem and the individual variables had an influence on the self-leadership of home-visit instructor's self-expectation. These results suggest that self-esteem and optimism are important precursors of self-leadership and self-leadership training based on self-esteem and optimism is necessary for self-leadership enhancement of home-visit instructors.

학령기 정상 아동의 호흡 특성과 신체 조건에 관한 상관분석 (Analysis of Correlation between Respiratory Characteristics and Physical Factors in Healthy Elementary School Childhood)

  • 이혜영;강동연;김경
    • The Journal of Korean Physical Therapy
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    • 제25권5호
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    • pp.330-336
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    • 2013
  • Purpose: Respiratory is an essential vital component for conservation of life in human, which is controlled by respiratory muscles and its related neuromuscular regulation. The purpose of this study is to assess lung capacity and respiratory pressure in healthy children, and to investigate relationship and predictability between respiratory pressure and other related respiratory functions. Methods: A total of 31 healthy children were recruited for this study. Demographic information and respiratory related factors were assessed in terms of body surface area (BSA), chest mobility, lung capacity, and respiratory pressure. Correlation between respiratory pressure and the rested variables was analyzed, and multiple regression using the stepwise method was performed for prediction of respiratory muscle strength, in terms of respiratory pressure as the dependent variable, and demographic and other respiratory variables as the independent variable. Results: According to the results of correlation analysis, respiratory pressure showed significant correlation with age (r=0.62, p<0.01), BSA (r=0.80, p<0.01), FVC (r=0.80, p<0.01), and FEV1 (r=0.70, p<0.01). In results of multiple regression analysis using the backward elimination method, BSA and FVC were included as significant factors of the predictable statistical model. The statistical model showed a significant explanation power of 71.8%. Conclusion: These findings suggest that respiratory pressure could be a valuable measurement tool for evaluation of respiratory function, because of significant relationship with physical characteristics and lung capacity, and that BSA and FVC could be possible predictable factors to explain the degree of respiratory pressure. These findings will provide useful information for clinical assessment and treatment in healthy children as well as those with pulmonary disease.

암환자 가족원의 우울에 대한 영향요인 (Factors Influencing Depression of the Cancer Patient's Family Caregivers)

  • 홍민주;김영숙;방부경;김익지
    • 보건의료산업학회지
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    • 제13권3호
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    • pp.163-172
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    • 2019
  • Objectives: With the rapidly increasing incidence of cancer worldwide, it has become important for health care professionals to both provide care for cancer patients and to address the challenges faced by family caregivers of cancer patients. This study aims to identify the factors affecting depression among cancer patients' family caregivers. The results of this study suggest the need to propose programs for family caregivers as well as cancer patients. Methods: Participants were 219 caregivers who were informed of the study purpose and agreed to participate. Data were analyzed using t-tests, one-way ANOVA, Scheffe's test, Pearson correlation coefficients, and multiple stepwise regression with the SPSS/WIN 25.0 program. Results: The mean score for depression among cancer patients' family caregivers was $1.57{\pm}.40$ (range: 0-3). Depression was significantly different based on age, relationship with the patient, education, occupation, cancer recurrence, care days per week, financial burden, site of cancer, and health status. Analysis using multiple regression showed that model 1 showed 16% of the factors predicting depression among cancer patients' family caregivers (F=6.16, p<.001) including occupation, recurrence, and health status of the caregiver. Model 3, which included additional burnout, showed 37% of the factors predicting depression (F=12.36, p<.001). Conclusions: These results suggest that it is necessary to develop programs for prevention and management of depression among cancer patients' family caregivers.